sed 'b' option


 
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# 1  
Old 10-21-2011
sed 'b' option

Hi,

What does the following command do on files?
Code:
sed '1b; $d'

To me it just deletes the last line of the file. If so what is the significance of sed's 'b' option?

Thanks
# 2  
Old 10-21-2011
b[<label>] jumps to the label or the end of the script.

In this case for line 1 it jumps to the end (i.e. does nothing) - meaning the script won't delete the last line if it is the only line.
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